Metal flooring.



A, W. RAMMGE.

MUM. FLGQRiNG. Appucmmmfusn 16.24, mis'. R'Euswan MAR. 28. 1911.

@mamy 32, 1917a other, as means V(plates to shape. formed is that of UNITED STATES PATENT OFFICE.

ARTHUR WILLIAM RAMMAGE OF EAST IUTNEY, LONDON, ENGLAND, k.ASSIGNRVJJO THE CHAPMAN TROUG-H DECKING-COMPANY LIMITED, OF LONDON, ENGLAND.

METAL FLOORING.

lPatented July 31, 1917.

Application filed August 24, :1914, Serial No.`858,305. I Renewed March 28, 1917. Serial No. '158,112.

posed, in the construction of ships and other structures to make use of channel section plates exactly similar in form to one antlie flanges of the channels serving for riveting'the vseveral plates together and also serving the purpose of ribs or frames.

I 'am furthermore aware that it isno-t new in decking or flooring to construct plates'of the ridge and furrowtype which are similar in form to one another and provided with flanges at their ends which are either vertically or 'horizontally disposed and joined and riveted together with or without angle `or T-irons.

I Ydesire it'to be understood that I make vno claim to the 'employment of ridge 'and furrowdecking or 'flooring but conne myself to the invention of such a section'thereof as shall allow of :being'machine or lhand riveted or bolted together from above in the 'case of bridges and floors and fro-mloelow in the'case of ceilings for subways and'at the same time permit of the edges 'of the joint beingkept'below l'or above theigeneral level of the deck as the case maybe.

Moreover only one'single forniof section is used, which can be 'pressed out of flat The said shape when one or more corrugations the lower ones being trough shaped with preferably a flat bottom and the sides or webs widening at the top. The several sections are moreover so constructed and arranged that, when erecting the flooring or decking, no under stages are necessary as all the riveting may be done at the top by any suitable known machine riveter. Furthermore, a minimum of riveting and metal is necessary and, since no rivets or flanges project above the deck obvious advantages are gained. Another feature of this invention is that the sections are easily and cheaply manufactured, and that they pack well for shipment.

To obtain these purposes my invention consists Vin providing a trough flooring or decking constructed of identical corrugated sections of plate characterized by the fact flanges is separated from vthe adjacent portion of the plate by a minor corrugation-so -designed `as to insure that the two flanges are parallel to one another and 'also that highest portion of the plate. The flanges -or adjacent sections of plate Ywill Ythus be parallel, and such flanges are `so disposed as to be capable of being readily riveted `from the top without the employment of understaging. The said flanges -should be either vertical, or should be inclined, in a directionaway from the-said minor'corrugation, at such an angle to the Yvertical `as will afford sufficient clearance for the operation of riveting, but -notat a greater angle to the vertical than will bringthem parallel to the opposite web or side ofthemain corrugation to which such flanges Aare neXt adjacent. A greater -inclination `would obviously cause a difficulty in stamping the plates, as the flange would overhang 'and prevent `the withdrawal of the i die.

It -will be' apparent that if vflooring made according to my invention is used as a roof or ceiling `for subways, it may ibe reversed, and in that case all rivetingmaybe-effected in like manner from one side only-in l'this case the underside.

In order that my invention may be imore clearly-understood, reference is "madeto the accompanying drawing, in which Figure 1 shows a perspective view of a `rst Vform ofconstruction'of the flooring or section of a third ltheir tops are not above the level -of the "435 steel, iron or any other suitable material or metal. The shape of each section when formed is, as has already been indicated, that of two corrugations, the lower one being trough-like with a preferably flat bottom as shown at al, and the sides or webs a2 and a3 widening out toward the top.

At the top of the left-hand side web a2 a flange at is formed by bending the web inward until vertical or even parallel with the right-hand side web of the trough.

It will be easily understood that the flange may be at any intermediate angle.

The right-hand side web continues curved over to form the top corrugation or deck which may be flat in the center, and then curves in a minor corrugation so as to end in a flange a5 which is parallel to the left hand flange a4.

These anges are riveted or bolted together at I), and the top of the flange is slightly below the deck or head of the top corrugations.

According to the modification, Fig. 2, the sections c consist of a series of four corrugations with a comparatively small depth, this form of construction being suitable for light flooring or decking. The arrangement of the ianges al, Z1 and the manner of joining the sections is substantially the same as described with reference to Fig. 1. It will be easily understood that three or four or more corrugations may be formed in one section. These corrugations, if the structure described is used as a floor or decking may be lled in the known manner with concrete or ballast.

According to the second modication, Fig. 3, the sections e are made of stronger plates and the depth of the corrugations is considerably greater. This construction is adapted for use with heavy flooring or decking, the flanges f, f1 in this case also being arranged and joined in the manner previously described.

In every form described the ends of said flanges are slightly below the level of the top Copies of this patent may be obtained for ve cents each, by addressing the corrugations, and in every case the iianges on the left-hand side web of the corrugation are either vertical, Fig. 4f, or parallel with the right-hand web of said corrugation, this arrangement not only allowing of easy packing for shipping purposes but also facilitating the pressing process.

An end view of a length of decking made to the section above described would correspond with the attached drawing when viewed only from one end.

Seen from the other end what was described above as right hand would be left hand and vice-versa.

I-Iaving now fully described my said invention what I claim and desire to secure by Letters Patent is l. In a trough flooring or decking for bridges and the like, the combination of identical corrugated sections of plate, both ends of each section being terminated by flanges one of which is separated from the adjacent portion of the plate by a minor corrugation so designed as to insure that the two flanges are parallel to one another and that their tops are not above the level of the highest portion of the plate, substantially as and for the purpose set forth.

2. In a trough flooring or decking for bridges and the like, the combination of identical sections of plate of which each is provided with a plurality of corrugations having flat tops and bottoms and both ends of each section being terminated by parallel iianges and of which the tops do not project Y above the tops of said corrugations and of which flanges one is separated from the adjacent portion of the section by a minor corrugation, substantially as and for the purpose described.

In testimony whereof I have hereunto set Y my hand in the witnesses.

ARTHUR WILLIAM RAMMAGE. Witnesses:

CARL R. Loop, O. J. WORTH.

presence of two subscribing Washington, D. C. 

